Allison reginald m



Sept; 14 1926.

w AJR. M. M LEAN APPARATUS FOR THE INTERMITTENT DELIVERY OF FLUIDS FiledAugust 8, 1924 I V Patented Sept. 14, 1926. i I I i I 1 y UNITED STATES.PATENT. OFFICE.

ALLISON REGINALD M. MACLEAN, or MONTREAL, Queen e, CANADA;

APPARATUS FOR THE-INTERMITTENT'DELIVEBY or rLUrns.

- Applicationfiled August a, 1924. Serial No. 731,002.

My invention relates particularlyto apby a rubber tube G to a carbolicfilter H 7 paratus for the intermittent delivery of similar to thefilter B- Near the lower end fluids in measured quantities and has forits of the burette is a nipple F while the lower object to provide anapparatus of this naextremity is bent at right angles and carries 60 5ture susceptible of operation by atmospheric a nozzle and stop cock K.The nipple F is pressure and thereby, when desired, be operconnectedtothe lower end of the leg 4: of the able to deliver a liquid inintermittent quansiphon by a length of rubber tubing, the pastities. Afurther object is to deliver by an sage through which is controlled by ascrew apparatus of this nature measured quanti clip E or other suitablevalve. 65 1o ties; and a still further obyect of the inven- The buretteis preferably graduated in tion is to start a siphon included in andcubic centimeters or other volume divisions forming a part of theapparatus- Another as required. I object of the invention is to start asiphon 4 5 by subject ng the discharged end thereof to I a suctioninduced by the condensation of a The container is first'filled with thefluid vapor. to be delivered intermittently. Then the To this end theinvention, broadly stated, tube D is detached from tube 4. the stop cockconsists of an apparatus comprising a con- K is closed and the buretteis charged with a tainer for the fluid and having atmosphericcondensable vapor through the tube 1). It communication, a dischargedevice, and a is necessary that the temperature of the pipe connectionbetween the container and vapor be sufficiently higher than atmosphericdischarge device, and the pipe connection to cause a suction on coolingin the closest having a valve controlling the same, and the apparatus.The valve or clip E must be discharge device having a discharge cock.left open during this operation, thus per 80 In the preferred embodimentof my inveninitting the condensable vapor to find its tion thecommunication between the conway to and escape from the filter H. Thetainer and the discharge device is in the tube D is reconnected to tube4. The stop form of a siphon and the discharge device cock is thenopened which permits the conis constructed and arranged to have avadensed or partially condensed fluid in it to 30 por condensed thereinfor the purpose of run out of the burette. The stop cock K creating asuction whereby the siphon is is then closed and the-tube G pinched,which started. causes the partial vacuum created by the For fullcomprehension, however, of my condensation of the vapor in the buretteto invention reference must be had to the acdraw on the tube D and startthe siphon. coinpanying drawing in which my apparatus As soon as thefluid from the container apis illustrated diagrammatically. pears in theburette the valve or clip E is The container in the apparatusillustrated then closed and the tube G is released. The is in the formof a flask A, the mouth of siphon is now complete'and the apparatuswhich is closed by a cork A carrying a carready for use. bolic filter Bin the form of a glass tube I prefer to employ steam in the operationbent to a right angle, with one leg extending of my apparatus. The steamenters the burdown through the cork into communication ette and findsits way to the filter H as above with the interior of the flask, itsother leg described. I'do not confine myself to steam being horizontalwith diminished mouth B as other condensable vapors may be em- I andcontaining absorbent cotton impregnatployed. Nor do I confine myself tothe use ed with carbolic acid. The siphon consists of a flask or burettebecause any suitable conof a tube bent to present continuous legs 2,tainer and discharge device may be used with 3 and 4 extending at rightangles to each the tubing I have shown, or other suitable other, thelegQpassing downwardly through means of communica ion be w en the dis-.50 the cork to within close proximity of the charge device and thesiphon, without de- I bottom of the flask, the leg 3 extendinghoriparting from the spirit of my invention. zontally and the leg 4:depending to a point The invention is also applicable to the measbelowthe bottom of the flask. A discharge 'uring and transferring ofobnoxious and poidevice preferably in the form of a burette sonousfluids; and to large operations where 11 F is located at a lower levelthan the bottom tanks and other engineering equipment is of the tube 4:and its air i take is connected used, within the scope of my invention.The

method of starting a siphon by the condensation of a. vapor is anessential-part of the invention.

lVhat I claim is as follows: 7 1. The method of starting a siphonconsisting in'subjecting the discharge end of the siphon to a suctionproduced by the condensation of a vapor.

2. In the intermittent delivery of fluids the combination With acontainer having atmospheric communication, of a discharge device havingatmospheric communication, a

. With a the In testimony whereof I have signed my name to thisspecification.

REGINALD M. MACLEAN.

